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<html lang="en">
<head>
    <meta charset="UTF-8">
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    <title>Document</title>
</head>
<body>
    <script>
         const arr= ['name', 'age', 'hhh', 'hhh', 'age', 'hhh', 'hhh', 'hhh']
         let newS={}
         arr.forEach(item=>newS[item]?newS[item]++:newS[item]=1)
      console.log(newS);
    </script>
</body>
</html>